text.rpart {mvpart} | R Documentation |
Labels the current plot of the tree dendrogram with text.
## S3 method for class 'rpart': text(x, splits = TRUE, which = 4, label = "yval", FUN = text, all.leaves = FALSE, pretty = NULL, digits = getOption("digits") - 2, tadj = 0.65, stats = TRUE, use.n = FALSE, bars = TRUE, legend = FALSE, xadj = 1, yadj = 1, bord = FALSE, big.pts = FALSE, ...)
x |
fitted model object of class rpart . This is assumed to be the result
of some function that produces an object with the same named
components as that returned by the rpart function.
|
splits |
logical flag. If TRUE (default), then the splits in the tree are
labeled with the criterion for the split.
|
which |
labels splits 1 = center, 2 = left, 3 = right , 4 = both. |
label |
a column name of x$frame ; values of this
will label the nodes. For the "class" method,
label="yval" results in the factor levels
being used, "yprob" results in the probability of the winning factor
level being used, and 'specific yval level' results in the probability
of that factor level.
|
FUN |
the name of a labeling function, e.g. text .
|
all.leaves |
Logical. If TRUE , all nodes are labeled, otherwise just
terminal nodes.
|
tadj |
Adjustment of text above (or below) splits. |
pretty |
an integer denoting the extent to which factor levels in split labels
will be abbreviated. A value of (0) signifies no abbreviation. A
NULL , the default, signifies using elements of letters to represent
the different factor levels.
|
digits |
number of significant digits to include in numerical labels. |
stats |
If TRUE adds statistics to nodes.
|
use.n |
If TRUE adds N to labels.
(#events level1/ #events level2/etc. for class ,
n for anova , and #events/n for poisson and exp ).
|
bars |
If TRUE adds barplots for multivariate regression trees.
|
legend |
If TRUE adds legends for multivariate regression trees.
|
xadj, yadj |
varies the size of barplots for multivariate regression trees. |
bord |
Adds borders (boxes) to barplots for multivariate regression trees. |
big.pts |
Adds color coded points to nodes. Useful to track groups to PCA plot
(see rpart.pca ).
|
... |
Graphical parameters may also be supplied as arguments to this
function (see par ).
|
the current plot of a tree dendrogram is labeled.
text
, plot.rpart
, rpart
,
post.rpart
, abbreviate
data(car.test.frame) z.auto <- rpart(Mileage ~ Weight, car.test.frame) plot(z.auto) text(z.auto, use.n=TRUE, all=TRUE)